A spurned lover has been cleared of criminal damage and harassing his former girlfriend - but must wait to see if he will be re-tried over allegations he broke into her home and put ammonia in her hair conditioner.

But the 36-year-old, of Cypress Gardens in Blyth, must return to Newcastle Crown Court next Tuesday to see whether prosecutors will apply for a retrial on the charges of burglary and administering a poison on which the jury could not agree.

During the trial the court heard that Ms Clark believed the window fitter had continued to target her despite being convicted of assault and harassment against her in October last year.

She said she believed Campbell had stalked her, scratched her car and smeared dog dirt on her car door handle - but the jury found him not guilty of both causing a fear of harassment and criminal damage.

Ms Clark also told the court that Mr Campbell had used a copied key to get in her home and stole a CCTV camera and monitor when she was out. She also later discovered her bottle of hair conditioner had been spiked with ammonia.

But the jury could not reach verdicts of counts of burglary and administering a poison, and were discharged of their duties.

The Crown Prosecution Service will now consider whether to apply for a retrial on those counts and a hearing will take place on Tuesday.

Campbell was bailed with conditions to live at an address in Seghill, near Seaton Delaval in Northumberland, not to enter Ashington or Blyth, and not to contact prosecution witnesses.